In an environment with asymmetric information the implementation of a first-best efficient Clarke-Groves-Vickrey (D’Aspremont-Gérard-Varet) mechanism may not be feasible if it has to be self-financing. By using intergenerational transfers, the arising budget deficit can generally be covered...

Institutional change is guided by rules. In the European Union these rules are given by Art. 250-252 of the Treaty of Amsterdam. These articles define the actors and rules that bring about changes in policies in the European Union. We analyze these articles as games in extensive form and...

In this paper the role of information asymmetries between regions and a centralized authority is analyzed. In a model with inter-regional externalities due to capital mobility and a source-based tax instrument, we first derive conditions for which the optimum can be implemented by an adequately...

For pay-as-you-go financed pension systems, claims may be calculated according to individual contributions (income) or the number of children of a family. We analyse the optimal structure of these parameters in a model with endogenous fertility. It is shown that for both structural determinants...

In einem Europa integrierter Güter- und Faktormärkte stehen die nationalen Systeme Sozialer Sicherung zunehmend auf dem Prüfstand. Mit der Schaffung des gemeinsamen Marktes wurden die individuellen Verfügungsrechte verändert. In diesem Essay werden diese Änderungen bezüglich den Zielen...